А cholesterol
B
phospholipid
C
saturated fatty acid
D
unsaturated fatty acid

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What are the three types of counseling established by marine corps policy?

Which description provides the best objective summary of the article in the passage?